<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片区域-->
    <el-card>
      <!--搜索与添加区域-->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input placeholder="请输入内容" clearable v-model="queryInfo.query">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!--用户列表区域-->
      <el-table
        :data="userlist"
        stripe
        border
        style="width: 100%">
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="username" label="姓名" width="180"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column prop="mobile" label="手机"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="changeState(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-tooltip content="修改" placement="top-start" :enterable="false">
              <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            </el-tooltip>
            <!--删除按钮-->
            <el-tooltip content="删除" placement="top-start" :enterable="false">
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            </el-tooltip>
            <!--分配角色按钮-->
            <el-tooltip content="分配角色" placement="top-start" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="showAssignRolesDialog(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--页码区域-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 5, 10, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!--添加用户的对话框-->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="30%" @close="addDialogClose">
      <!--内容主体区域-->
      <el-form :model="addForm" status-icon :rules="addFormRules" ref="addFormRef" label-width="100px" class="demo-ruleForm">
        <el-form-item label="用户名" prop="username">
          <el-input type="text" v-model="addForm.username" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input type="password" v-model="addForm.password" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input type="text" v-model="addForm.email" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile" autocomplete="off"></el-input>
        </el-form-item>
        <!--<el-form-item>-->
        <!--  <el-button type="primary" @click="submitForm('ruleForm')">提交</el-button>-->
        <!--  <el-button @click="resetForm('ruleForm')">重置</el-button>-->
        <!--</el-form-item>-->
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button type="primary" @click="addUser">确 定</el-button>
        <el-button @click="addDialogVisible = false">取 消</el-button>
      </span>
    </el-dialog>
    <!--编辑用户的对话框-->
    <el-dialog title="编辑用户" :visible.sync="editDialogVisible" width="30%" @close="editDialogClose">
      <!--内容主体区域-->
      <el-form :model="editForm" status-icon :rules="editFormRules" ref="editFormRef" label-width="100px" class="demo-ruleForm">
        <el-form-item label="用户名">
          <el-input type="text" v-model="editForm.username" autocomplete="off" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input type="text" v-model="editForm.email" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile" autocomplete="off"></el-input>
        </el-form-item>
        <!--<el-form-item>-->
        <!--  <el-button type="primary" @click="submitForm('ruleForm')">提交</el-button>-->
        <!--  <el-button @click="resetForm('ruleForm')">重置</el-button>-->
        <!--</el-form-item>-->
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button type="primary" @click="editUser">确 定</el-button>
        <el-button @click="editDialogVisible = false">取 消</el-button>
      </span>
    </el-dialog>
    <!--分配角色的对话框-->
    <el-dialog title="编辑用户" :visible.sync="assignRolesDialogVisible" width="30%" @close="assignRoleDialogClosed">
      <!--内容主体区域-->
      <div>
        <p>当前的用户: {{userInfo.username}}</p>
        <p>当前的角色: {{userInfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option v-for="item in roleList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
          </el-select>
        </p>
      </div>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button type="primary" @click="setRoles">确 定</el-button>
        <el-button @click="assignRolesDialogVisible = false">取 消</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    let checkEmail = (rule, value, cb) => {
      let regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+/
      if (regEmail.test(value)){
        // 合法的邮箱
        return cb();
      }
      cb(new Error('请输入合法的邮箱'))
    }
    let checkMobile = (rule, value, cb) => {
      let regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)){
        // 合法的手机号
        return cb();
      }
      cb(new Error('请输入合法的手机号'))
    }

    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10,
      },
      userlist : [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 6, max: 15, message: '密码的长度在6~15个字符之间', trigger: 'blur'}
        ],
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机号', trigger: 'blur'},
          // {min: 11, max: 11, message: '手机号格式错误', trigger: 'blur'}
          {validator: checkMobile, trigger: 'blur'}
        ],
      },
      // 编辑表单的验证规则对象
      editFormRules: {
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机号', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}
        ],
      },
      // 控制编辑用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 控制分配角色对话框的显示与隐藏
      assignRolesDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      roleList: [],
      // 选择的角色
      selectRoleId : ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    // 获取用户列表
    async getUserList() {
      let { data: res} = await this.$http.get('users', {
        params: this.queryInfo
      })
      if ( res.meta.status !== 200 ){
        return this.$message.error(res.meta.msg)
      }
      this.userlist = res.data.users;
      this.total = res.data.total;
    },
    // pageSize 改变时会触发
    handleSizeChange(pagesize) {
      this.queryInfo.pagesize = pagesize
      this.getUserList()
    },
    // currentPage 改变时会触发
    handleCurrentChange(pagenum) {
      this.queryInfo.pagenum = pagenum
      this.getUserList()
    },
    // switch 状态发生变化时的回调函数
    async changeState(row) {
      let {data: res} = await this.$http.put(`users/${row.id}/state/${row.mg_state}`)
      if ( res.meta.status !== 200 ){
        return this.$message.error(res.meta.msg)
      }
      this.$message.success('状态变更成功')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮,添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        let {data:res} = await this.$http.post('users', this.addForm);
        if ( res.meta.status !== 201 ){
          return this.$message.error(res.meta.msg)
        }
        this.$message.success('添加用户成功')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 显示编辑用户的对话框
    async showEditDialog(id) {
      let {data:res} = await this.$http.get('users/' + id, this.addForm);
      if ( res.meta.status !== 200 ){
        return this.$message.error(res.meta.msg)
      }

      // 保存用户数据
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听编辑用户对话框的关闭事件
    editDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    // 点击按钮,编辑用户
    editUser() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起编辑用户的网络请求
        let {data:res} = await this.$http.put('users/' + this.editForm.id,{
          email: this.editForm.email,
          mobile: this.editForm.mobile
        });
        if ( res.meta.status !== 200 ){
          return this.$message.error(res.meta.msg)
        }
        this.$message.success('编辑用户成功')
        // 关闭编辑用户的对话框
        this.editDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 根据id删除用户
    async removeUserById(id) {
      // 弹框询问是否删除
      let confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      const {data: res} = await this.$http.delete('users/' + id)

      if ( res.meta.status !== 200 ){
        return this.$message.error(res.meta.msg)
      }

      this.$message.success('删除用户成功')
      // 重新获取用户列表数据
      this.getUserList()
    },
    // 显示分配角色的对话框
    async showAssignRolesDialog(row) {
      this.userInfo = row

      // 获取所有的角色列表
      let {data: res} = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败!')
      }
      this.roleList = res.data

      this.assignRolesDialogVisible = true
    },
    // 关闭分配角色的对话框
    assignRoleDialogClosed() {
      this.selectRoleId = ''
      this.userInfo = {}
    },
    // 分配角色
    async setRoles() {
      if (!this.selectRoleId) {
        return this.$message.error('请选择要分配的角色!')
      }

      let {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectRoleId})
      if (res.meta.status !== 200) {
        return this.$message.error('分配角色失败!')
      }
      // 重新获取用户列表
      this.getUserList()
      // 关闭分配角色对话框
      this.assignRolesDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>

</style>
